“While we believe it is very likely that the lower-level Web Services specifications such as SOAP, WSDL, and UDDI will be agreed upon, the more business-critical higher level specifications dealing with security, reliability, transaction control, and business process will be pulled in many different directions. We’re thus faced with the possibility that the open nature of Web Services will become corrupted with proprietary implementations, rendering interoperability a difficult goal to achieve.”

The Pros & Cons of Web Services, May 13, 2002.